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67 lines
2.2 KiB
C
67 lines
2.2 KiB
C
/*
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* GStreamer
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* Copyright (C) 2008 Wim Taymans <wim.taymans@gmail.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __GST_AUDIO_KARAOKE_H__
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#define __GST_AUDIO_KARAOKE_H__
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#include <gst/gst.h>
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#include <gst/base/gstbasetransform.h>
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#include <gst/audio/audio.h>
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#include <gst/audio/gstaudiofilter.h>
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G_BEGIN_DECLS
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#define GST_TYPE_AUDIO_KARAOKE (gst_audio_karaoke_get_type())
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#define GST_AUDIO_KARAOKE(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AUDIO_KARAOKE,GstAudioKaraoke))
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#define GST_IS_AUDIO_KARAOKE(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AUDIO_KARAOKE))
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#define GST_AUDIO_KARAOKE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass) ,GST_TYPE_AUDIO_KARAOKE,GstAudioKaraokeClass))
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#define GST_IS_AUDIO_KARAOKE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass) ,GST_TYPE_AUDIO_KARAOKE))
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#define GST_AUDIO_KARAOKE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj) ,GST_TYPE_AUDIO_KARAOKE,GstAudioKaraokeClass))
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typedef struct _GstAudioKaraoke GstAudioKaraoke;
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typedef struct _GstAudioKaraokeClass GstAudioKaraokeClass;
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typedef void (*GstAudioKaraokeProcessFunc) (GstAudioKaraoke *, guint8 *, guint);
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struct _GstAudioKaraoke
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{
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GstAudioFilter audiofilter;
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/* properties */
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gfloat level;
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gfloat mono_level;
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gfloat filter_band;
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gfloat filter_width;
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/* filter coef */
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gfloat A, B, C;
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gfloat y1, y2;
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/* < private > */
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GstAudioKaraokeProcessFunc process;
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};
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struct _GstAudioKaraokeClass
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{
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GstAudioFilterClass parent;
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};
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GType gst_audio_karaoke_get_type (void);
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G_END_DECLS
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#endif /* __GST_AUDIO_KARAOKE_H__ */
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